I was happy with this choice. The place was incredibly quiet for being so near Kao San Road, you could have it cleaned every day if you wanted to, there was air-con and the reception, open 24/7, was very friendly and efficient.
Only two flaws: 1) this is not a private home - it is like a hotel, so the room you get is not exactly as seen in the pictures. 2) I am not sure there should be places like this on Airbnb - I am a host myself, and have always thought hotels and similar were excluded.
Having said that, it is a very good choice if you are looking for a clean and quiet place near the bustling tourist area, and at the same time near the river (it allows you to get around by boat rather than by tuk-tuk). For short stays it is absolutely fine!